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Class 1 Tungsten vs. SAE-AISI 1140 Steel

Class 1 tungsten belongs to the otherwise unclassified metals classification, while SAE-AISI 1140 steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is class 1 tungsten and the bottom bar is SAE-AISI 1140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 250
190
Elongation at Break, % 5.7
14 to 18
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 98
72
Tensile Strength: Ultimate (UTS), MPa 860
600 to 700
Tensile Strength: Yield (Proof), MPa 580
340 to 570

Thermal Properties

Latent Heat of Fusion, J/g 160
250
Specific Heat Capacity, J/kg-K 120
470
Thermal Conductivity, W/m-K 21
51
Thermal Expansion, µm/m-K 5.1
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 7.4
8.1

Otherwise Unclassified Properties

Density, g/cm3 15
7.8
Embodied Carbon, kg CO2/kg material 22
1.4
Embodied Energy, MJ/kg 340
18
Embodied Water, L/kg 140
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
89 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 660
310 to 870
Stiffness to Weight: Axial, points 9.6
13
Stiffness to Weight: Bending, points 14
24
Strength to Weight: Axial, points 16
21 to 25
Strength to Weight: Bending, points 14
20 to 22
Thermal Diffusivity, mm2/s 12
14
Thermal Shock Resistance, points 48
18 to 21

Alloy Composition

Carbon (C), % 0
0.37 to 0.44
Iron (Fe), % 0
98.4 to 98.9
Manganese (Mn), % 0
0.7 to 1.0
Phosphorus (P), % 0
0 to 0.040
Sulfur (S), % 0
0.080 to 0.13
Tungsten (W), % 90
0
Residuals, % 10
0